def add_file(self, submission_gus, file_name, content_type, file_size):
store = self.getStore('add_file')
try:
submission_r = store.find(Submission, Submission.submission_gus==submission_gus).one()
except NotOneError:
store.close()
raise SubmissionGusNotFound
if not submission_r:
store.close()
raise SubmissionGusNotFound
new_file = File()
new_file.file_gus = ret_file_gus = unicode(idops.random_file_gus())
new_file.name = file_name
new_file.content_type = content_type
new_file.size = file_size
submission_r.files.update({ new_file.file_gus : file_name })
log.debug("Added file %s in submission %s with name %s" % (ret_file_gus, submission_gus, file_name))
store.add(new_file)
store.commit()
store.close()
return ret_file_gus
